/**
 * Copyright 2019-2029 longxiaonan(https://github.com/longxiaonan)
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.javasea.web.json.serializer;

import com.fasterxml.jackson.core.JsonGenerator;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonSerializer;
import com.fasterxml.jackson.databind.SerializerProvider;
import com.javasea.web.json.DatePattern;

import java.io.IOException;
import java.time.Instant;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.Date;

/**
 * <p>
 *     Jackson Date反序列化器
 * </p>
 * @author longxiaonan
 * @date 2018-11-08
 */
public class JacksonDateSerializer extends JsonSerializer<Date> {

    @Override
    public void serialize(Date date, JsonGenerator jsonGenerator, SerializerProvider serializerProvider) throws IOException, JsonProcessingException {
        if (date != null){
            DateTimeFormatter dateTimeFormatter = DateTimeFormatter.ofPattern(DatePattern.yyyy_MM_dd_HH_mm_ss);
            Instant instant = date.toInstant();
            String dateString = instant.atZone(ZoneId.systemDefault()).format(dateTimeFormatter);
            jsonGenerator.writeString(dateString);
        }
    }
}
